I think i just found why car started running like crap, just need you guys to confirm what i found. Stupid question but i have to ask...do i have to ground the brown wire for my 1jz ECU... I figured the ECU was grounded cause i didn't take the harness from the engine set when i received my 1jz..The other day i was going though all my research, and i found the gray 25 pin connector, which i believe must have plugged into the dash of the supra, not sure... but that plug has a brown wire thats suppose to be ecu ground.
Question is do i just cut this wire and ground it.. that simple? By the way 1jz swapped into a 74 nissan 260z..Hopfully i didn't burn my ECU..looks fine on the inside...caps have been replaced.
http://www.supras.nl/index.php?option=com_content&task=view&id=38&Itemid=54
1. N.C.
2. Brown Ground (for exh. temp etc)
3. Yellow +12 v for auto gear indication
4. Green - white Stop signal from footbrake
5. N.C.
6. N.C.
7. Yellow - Green Water temp for dashboard
8. Pink Speed signal
9. N.C.
10. Black - Blue Start signal for circuit opening relay
11. Black Tach signal for combination meter
12. N.C.
13. Green - Black exh. temp sensor CCO check box
14. Red 'P' signal auto gearbox indication
15. White 'N' signal auto gearbox indication
16. Violet 'D' signal auto gearbox
17. N.C.
18. Brown Ground for ECU etc.
19. Grey - Green Check engine light 'W' checkbox
20. Yellow - Blue Exh. temp warning light
21. Yellow - Black
22. Grey - Green Check engine light
23. Yellow - Red / Yellow - Black Oil pressure switch
24. Black - Red Back up lights + 'R' signal
25. Yellow - Red / Yellow - Blue To white rect. connector pin 22
Question is do i just cut this wire and ground it.. that simple? By the way 1jz swapped into a 74 nissan 260z..Hopfully i didn't burn my ECU..looks fine on the inside...caps have been replaced.
http://www.supras.nl/index.php?option=com_content&task=view&id=38&Itemid=54
1. N.C.
2. Brown Ground (for exh. temp etc)
3. Yellow +12 v for auto gear indication
4. Green - white Stop signal from footbrake
5. N.C.
6. N.C.
7. Yellow - Green Water temp for dashboard
8. Pink Speed signal
9. N.C.
10. Black - Blue Start signal for circuit opening relay
11. Black Tach signal for combination meter
12. N.C.
13. Green - Black exh. temp sensor CCO check box
14. Red 'P' signal auto gearbox indication
15. White 'N' signal auto gearbox indication
16. Violet 'D' signal auto gearbox
17. N.C.
18. Brown Ground for ECU etc.
19. Grey - Green Check engine light 'W' checkbox
20. Yellow - Blue Exh. temp warning light
21. Yellow - Black
22. Grey - Green Check engine light
23. Yellow - Red / Yellow - Black Oil pressure switch
24. Black - Red Back up lights + 'R' signal
25. Yellow - Red / Yellow - Blue To white rect. connector pin 22
